Haunting footage shows the decaying ruins of the multi-million pound mega-mansions left abandoned on Billionaires’ Row. The ultra-exclusive road, officially named The Bishops Avenue in Hampstead, North London is a 66-house street boasting some of the most valuable properties in Britain.

Urban explorers ventured into some of its gigantic empty houses, where cobwebs coat the walls and crumbling ceilings cover the previously pristine cavernous rooms. Drained indoor swimming pools and gutted bedrooms lay untouched for years in the colossal wrecks — some of which have not been lived in for over a quarter of a century.

Average prices for homes on the street were over £1million in the late 1980s and one property there is currently on the market for £19million. At the time, a third of all the mansions in the most expensive stretch of Billionaire’s Row were empty — collectively worth around £350million.